rubocop-emoji.rb

gistfile1.rb

# rubocop app.rb --require "./emoji_formatter" --format EmojiFormatter
require "rubocop"

# This formatter display green hearts for files with no offenses and
# letters for files with problems in the them. In the end it
# appends the regular report data in the clang style format.
class EmojiFormatter < RuboCop::Formatter::ProgressFormatter
  def report_file_as_mark(offenses)
    mark = if offenses.empty?
             "\u{1f49a}"
           else
             highest_offense = offenses.max_by(&:severity)
             colored_severity_code(highest_offense)
           end

    output.write mark
  end
end